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<head>
    <meta charset="UTF-8">
    <title>Title</title>
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<body>
<script src="../src/ec-do-3.0.0-beta.1.js"></script>
<script>
     let count=0;
     function fn1(){
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         console.log(count)
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     //100ms内连续触发的调用，后一个调用会把前一个调用的等待处理掉，但每隔200ms至少执行一次
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